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A012854 Numerators of coefficients in Taylor series expansion of log(cosec(x)*log(x+1)). 1
0, -1, 3, -1, 89, -19, 61, -751, 214157, -2857, 2440391, -434293, 4786462007, -8181904909, 1166310802697, -5044289, 1618597982932877, -5026792806787, 3508902074919929, -69028763155644023, 739712409650680415009, -1022779523247467, 133929790442712217763, -750218743980105669781, 129849827600028451700919961 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..24.

EXAMPLE

-1/2*x+3/8*x^2-1/8*x^3+89/960*x^4-19/288*x^5+61/1152*x^6-751/17280*x^7+214157/5806080*x^8-

2857/89600*x^9+2440391/87091200*x^10 +...

MAPLE

t1:=log(csc(x)*log(x+1));

t2:=series(t1, x, 30);

t3:=seriestolist(t2);

t4:=map(numer, t3); t5:=map(denom, t3); lprint(t2);

CROSSREFS

Cf. A202379.

Sequence in context: A213069 A266277 A016482 * A241191 A221195 A071291

Adjacent sequences:  A012851 A012852 A012853 * A012855 A012856 A012857

KEYWORD

sign,frac

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

EXTENSIONS

Corrected by N. J. A. Sloane, Dec 18 2011, based on discussions on the Sequence Fans Mailing List, Dec 13-17 2011.

STATUS

approved

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Last modified June 28 09:49 EDT 2017. Contains 288813 sequences.